Download Acrosser Technology 486DX, 486DX2, 486DX4 User`s guide

AR-B1476
INDUSTRIAL GRADE
486DX/DX2/DX4 CPU CARD
User’ s Guide
Edition: 1.5
Book Number: AR-B1476-02.0801
AR-B1476 User’s Guide
Table of Contents
0.
PREFACE ...........................................................................................................................................................0-3
0.1
0.2
0.3
0.4
0.5
0.6
0.7
1.
OVERVIEW .........................................................................................................................................................1-1
1.1
1.2
1.3
2.
COPYRIGHT NOTICE AND DISCLAIMER......................................................................................................................... 0-3
WELCOME TO THE AR-B1476 CPU BOARD.................................................................................................................... 0-3
BEFORE YOU USE THIS GUIDE ...................................................................................................................................... 0-3
RETURNING YOUR BOARD FOR SERVICE .................................................................................................................... 0-3
TECHNICAL SUPPORT AND USER COMMENTS ............................................................................................................ 0-3
ORGANIZATION................................................................................................................................................................ 0-4
STATIC ELECTRICITY PRECAUTIONS ............................................................................................................................ 0-4
INTRODUCTION................................................................................................................................................................ 1-1
PACKING LIST .................................................................................................................................................................. 1-2
FEATURES........................................................................................................................................................................ 1-2
SYSTEM CONTROLLER....................................................................................................................................2-1
2.1
DMA CONTROLLER.......................................................................................................................................................... 2-1
2.2
KEYBOARD CONTROLLER .............................................................................................................................................. 2-1
2.3
INTERRUPT CONTROLLER.............................................................................................................................................. 2-2
2.3.1
I/O Port Address Map ................................................................................................................................................. 2-3
2.3.2
I/O Channel Pin Assignment (Bus1) ........................................................................................................................... 2-3
2.4
REAL-TIME CLOCK AND NON-VOLATILE RAM ............................................................................................................... 2-5
2.5
TIMER................................................................................................................................................................................ 2-5
2.6
SERIAL PORT ................................................................................................................................................................... 2-6
2.7
PARALLEL PORT .............................................................................................................................................................. 2-8
3.
SETTING UP THE SYSTEM ...............................................................................................................................3-1
3.1
OVERVIEW........................................................................................................................................................................ 3-1
3.2
SYSTEM SETTING ............................................................................................................................................................ 3-2
3.2.1
Hard Disk (IDE) Connector (CN1)............................................................................................................................... 3-2
3.2.2
FDD Port Connector (CN2)......................................................................................................................................... 3-3
3.2.3
Parallel Port Connector (CN4) .................................................................................................................................... 3-3
3.2.4
PC/104 Connector...................................................................................................................................................... 3-4
3.2.5
LED Header ............................................................................................................................................................... 3-6
3.2.6
Serial Port .................................................................................................................................................................. 3-7
3.2.7
Keyboard Connector (CN9 & J9) ................................................................................................................................ 3-9
3.2.8
External Speaker Header (J2) .................................................................................................................................... 3-9
3.2.9
Power Connector (J10)............................................................................................................................................... 3-9
3.2.10
Reset Header (J8) ................................................................................................................................................ 3-10
3.2.11
PS/2 Mouse Connector......................................................................................................................................... 3-10
3.2.12
CPU Setting ......................................................................................................................................................... 3-11
3.2.13
Memory Setting .................................................................................................................................................... 3-12
3.2.14
DiskOnChip Installation (SW1) ............................................................................................................................. 3-13
4.
CRT/LCD FLAT PANEL DISPLAY.....................................................................................................................4-1
4.1
CRT CONNECTOR (DB1).................................................................................................................................................. 4-1
4.2
LCD FLAT PANEL DISPLAY.............................................................................................................................................. 4-1
4.2.1
Inverter Board Description .......................................................................................................................................... 4-2
4.2.2
LCD Connector........................................................................................................................................................... 4-2
4.3
SUPPORTED LCD PANEL ................................................................................................................................................ 4-3
5.
INSTALLATION ..................................................................................................................................................5-1
5.1
OVERVIEW........................................................................................................................................................................ 5-1
5.2
UTILITY DISKETTE ........................................................................................................................................................... 5-1
5.2.1
VGA Driver ................................................................................................................................................................. 5-2
5.2.2
BIOS FLASH Utility..................................................................................................................................................... 5-4
5.3
WATCHDOG TIMER.......................................................................................................................................................... 5-5
5.3.1
Watchdog Timer Setting ............................................................................................................................................. 5-5
5.3.2
Watchdog Timer Enabled ........................................................................................................................................... 5-6
5.3.3
Watchdog Timer Trigger............................................................................................................................................. 5-6
5.3.4
Watchdog Timer Disabled .......................................................................................................................................... 5-6
6.
BIOS CONSOLE.................................................................................................................................................6-1
6.1
BIOS SETUP OVERVIEW.................................................................................................................................................. 6-1
6.2
STANDARD CMOS SETUP ............................................................................................................................................... 6-2
6.3
ADVANCED CMOS SETUP ............................................................................................................................................... 6-3
6.4
ADVANCED CHIPSET SETUP .......................................................................................................................................... 6-6
6.5
PERIPHERAL SETUP........................................................................................................................................................ 6-7
6.6
AUTO-DETECT HARD DISKS ........................................................................................................................................... 6-7
6.7
PASSWORD SETTING ...................................................................................................................................................... 6-8
6.7.1
Setting Password ....................................................................................................................................................... 6-8
0-1
AR-B1476 User’s Guide
6.7.2
Password Checking.................................................................................................................................................... 6-8
6.8
LOAD DEFAULT SETTING ................................................................................................................................................ 6-8
6.8.1
Auto Configuration with Optimal Setting...................................................................................................................... 6-8
6.8.2
Auto Configuration with Fail Safe Setting.................................................................................................................... 6-8
6.9
BIOS EXIT ......................................................................................................................................................................... 6-9
6.9.1
Save Settings and Exit ............................................................................................................................................... 6-9
6.9.2
Exit Without Saving .................................................................................................................................................... 6-9
6.10
BIOS UPDATE ............................................................................................................................................................... 6-9
7.
8.
SPECIFICATIONS ..............................................................................................................................................7-1
PLACEMENT & DIMENSIONS...........................................................................................................................8-1
8.1
8.2
9.
PLACEMENT ..................................................................................................................................................................... 8-1
DIMENSIONS .................................................................................................................................................................... 8-2
PROGRAMMING RS-485 & INDEX....................................................................................................................9-1
9.1
9.2
0-2
PROGRAMMING RS-485 .................................................................................................................................................. 9-1
INDEX................................................................................................................................................................................ 9-3
AR-B1476 User’s Guide
0.PREFACE
0.1 COPYRIGHT NOTICE AND DISCLAIMER
June 1998
This document is copyrighted, 1998, by Acrosser Technology Co., Ltd. All rights are reserved. No part of this
manual may be reproduced, copied, transcribed, stored in a retrieval system, or translated into any language or
computer language in any form or by any means, such as electronic, mechanical, magnetic, optical, chemical,
manual or other means without the prior written permission of original manufacturer.
Acrosser Technology assumes no responsibility or warranty with respect to the contents in this manual and
specifically disclaims any implied warranty of merchantability or fitness for any particular purpose. Furthermore,
Acrosser Technology reserves the right to make improvements to the products described in this manual at any
times without notice. Such revision will be posted on the Internet (WWW.ACROSSER.COM) as soon as possible.
Possession, use, or copying of the software described in this publication is authorized only pursuant to a valid
written license from Acrosser or an authorized sub licensor.
ACKNOWLEDGEMENTS
Acrosser, ALI, AMI, HMC, IBM PC/AT, Windows 3.1, Windows 95, Windows NT, AMD, Cyrix, Intel…are registered
trademarks.
All other trademarks and registered trademarks are the property of their respective holders.
This document was produced with Adobe Acrobat 3.01.
0.2 WELCOME TO THE AR-B1476 CPU BOARD
This guide introduces the Acrosser AR-B1476 CPU board.
The information provided in this manual describes this card’s functions and features. It also helps you start, set up
and operate your AR-B1476. General system information can also be found in this publication.
0.3 BEFORE YOU USE THIS GUIDE
Please refer to the Chapter 3, “Setting Up the System” in this guide, if you have not already installed this ARB1476. Check the packing list before you install and make sure the accessories are completely included.
The AR-B1476 diskette provides the newest information regarding the CPU card. Please refer to the
README.DOC file of the enclosed utility diskette. It contains the modification and hardware & software
information, and it has updated to products functions that may not be mentioned here.
0.4 RETURNING YOUR BOARD FOR SERVICE
If your board requires any services, contact the distributor or sales representative from whom you purchased the
product for service information. If you need to ship your board to us for service, be sure it is packed in a protective
carton. We recommend that you keep the original shipping container for this purpose.
You can help assure efficient servicing for your product by following these guidelines:
1.
Include your name, address, telephone, facsimile number and E-mail.
2.
A description of the system configuration and/or software at the time is malfunction.
3.
A brief description of the problem occurred.
0.5 TECHNICAL SUPPORT AND USER COMMENTS
User’s comments are always welcome as they assist us in improving the quality of our products and the
readability of our publications. They create a very important part of input used for product enhancement and
revision.
We may use and distribute any of the information you provide in any way appropriate without incurring any
obligation. You may, of course, continue to use the information you provide.
If you have any suggestions for improving particular sections or if you find any errors on it, please send your
comments to Acrosser Technology Co., Ltd. or your local sales representative and indicate the manual title and
book number.
Internet electronic mail to: [email protected]
0-3
AR-B1476 User’s Guide
0.6 ORGANIZATION
This information for users covers the following topics (see the Table of Contents for a detailed listing):
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Chapter 1, “Overview”, provides an overview of the system features and packing list.
Chapter 2, “System Controller” describes the major structure.
Chapter 3, “Setting Up the System”, describes how to adjust the jumper, and the connectors setting.
Chapter 4, “CRT/LCD Flat Panel Display”, describes the configuration and installation procedure using
the LCD and CRT display.
Chapter 5, “Installation”, describes setup procedures including information on the utility diskette.
Chapter 6, “BIOS Console”, providing the BIOS options setting.
Chapter 7, Specifications
Chapter 8, Placement & Dimensions
Chapter 9, Programming RS-485 & Index
0.7 STATIC ELECTRICITY PRECAUTIONS
Before removing the board from its anti-static bag, read this section about static electricity precautions.
Static electricity is a constant danger to computer systems. The charge that can build up in your body may be
more than sufficient to damage integrated circuits on any PC board. It is, therefore, important to observe basic
precautions whenever you use or handle computer components. Although areas with humid climates are much
less prone to static build-up, it is always best to safeguard against accidents may result in expensive repairs. The
following measures should generally be sufficient to protect your equipment from static discharge:
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0-4
Touch a grounded metal object to discharge the static electricity in your body (or ideally, wear a grounded
wrist strap).
When unpacking and handling the board or other system component, place all materials on an antic static
surface.
Be careful not to touch the components on the board, especially the “golden finger” connectors on the bottom
of every board.
AR-B1476 User’s Guide
1. OVERVIEW
This chapter provides an overview of your system features and capabilities. The following topics are covered:
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Introduction
Packing List
Features
1.1 INTRODUCTION
The AR-B1476 is a half size industrial grade CPU card that has been designed to withstand continuous operation
in harsh environments. The AR-B1476 supports on-board memory 8MB, and extends to 72MB DRAM for using
one 72-pin SIMM.
The 8 layers PCB CPU card is equipped with an IDE HDD interface, a floppy disk drive adapter, 1 parallel port, 2
serial ports and a watchdog timer. Its dimensions are as compact as 122mmX185mm. It highly condensed
features make it an ideal cost/performance solution for high-end commercial and industrial applications where CPU
speeding and mean time between failure is critical.
The AR-B1476 provides 2 bus interfaces, ISA bus and PC/104 compatible expansion bus. Based on the PC/104
expansion bus, you could easy install thousands of PC/104 module from hundreds venders around the world. You
could also directly connect the power supply to the AR-B1476 on-board power connector in standalone
applications.
A watchdog timer has a software programmable time-out interval, is also provided on this CPU card. It ensures
that the system does not hang-up if a program cannot execute normally.
The AR-B1476 is implemented with M1487 and M1489 chipset incorporate a memory controller, parity generation
and checking, two 8237 DMA controllers, two 8259 interrupt controllers, one 8254 timer/counter, an address buffer
and a data buffer.
A super I/O chip (SMC37C669) is embedded in the AR-B1476 card. It combines functions of a floppy disk drive
adapter, a hard disk drive (IDE) adapter, two serial (with 16C550 UART) adapters and 1 parallel adapter. The I/O
port configurations can be done by set the BIOS setup program.
As an UART, the chip supports serial to parallel conversion on data characters received from a peripheral device
or a MODEM, and parallel to serial conversion on data character received from the CPU. The UART includes a
programmable baud rate generator, complete MODEM control capability and a processor interrupt system. As a
parallel port, the SMC37C669 provides the user with a fully bi-directional parallel centronics-type printer interface.
1-1
AR-B1476 User’s Guide
1.2 PACKING LIST
The accessories are included with the system. Before you begin installing your AR-B1476 board, take a moment
to make sure that the following items have been included inside the AR-B1476 package.
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This user’s guide
1 AR-B1476 CPU card
1 Hard disk drive interface cable
1 Floppy disk drive interface cable
1 Parallel port interface cable & 1 RS-232C interface cable mounted on one bracket
1 Software utility CD.
1.3 FEATURES
The system provides a number of special features that enhance its reliability, ensure its availability, and improve its
expansion capabilities, as well as its hardware structure.
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1-2
All In One designed 486DX/DX2/DX4 CPU card.
Supports 3.45V/5V CPU with voltage regulator.
Supports ISA bus and PC/104 bus.
Supports 512KB cache on board.
Supports on-board 8MB and extends one 72-pin DRAM SIMM up to 72MB DRAM on board.
Supports shadow memory and EMS.
Supports D.O.C. up to 72MB.
Legal AMI BIOS.
IDE hard disk drive interface.
Floppy disk drive interface.
Bi-direction parallel interface.
2 serial ports with 16C550 UART.
Programmable watchdog timer.
On-board built-in buzzer.
8 layers PCB.
AR-B1476 User’s Guide
2. SYSTEM CONTROLLER
This chapter describes the major structure of the AR-B1476 CPU board. The following topics are covered:
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DMA Controller
Keyboard Controller
Interrupt Controller
Real-Time Clock and Non-Volatile RAM
Timer
Serial Port
Parallel Port
2.1 DMA CONTROLLER
The equivalent of two 8237A DMA controllers are implemented in the AR-B1476 board. Each controller is a fourchannel DMA device that will generate the memory addresses and control signals necessary to transfer
information directly between a peripheral device and memory. This allows high speeding information transfer with less
CPU intervention. The two DMA controllers are internally cascaded to provide four DMA channels for transfers to
8-bit peripherals (DMA1) and three channels for transfers to 16-bit peripherals (DMA2). DMA2 channel 0 provides
the cascade interconnection between the two DMA devices, thereby maintaining IBM PC/AT compatibility.
Following is the system information of DMA channels:
DMA Controller 1
DMA Controller 2
Channel 0: Spare
Channel 4: Cascade for controller 1
Channel 1: IBM SDLC
Channel 5: Spare
Channel 2: Diskette adapter
Channel 6: Spare
Channel 3: Spare
Channel 7: Spare
Table 2-1 DMA Channel Controller
2.2 KEYBOARD CONTROLLER
The 8042 processor is programmed to support the keyboard serial interface. The keyboard controller receives
serial data from the keyboard, checks its parity, translates scan codes, and presents it to the system as a byte data
in its output buffer. The controller can interrupt the system when data is placed in its output buffer, or wait for the
system to poll its status register to determine when data is available.
Data can be written to the keyboard by writing data to the output buffer of the keyboard controller.
Each byte of data is sent to the keyboard controller in series with an odd parity bit automatically inserted. The
keyboard controller is required to acknowledge all data transmissions. Therefore, another byte of data will not be
sent to keyboard controller until acknowledgment is received for the previous byte sent. The “output buffer full”
interruption may be used for both send and receive routines.
2-1
AR-B1476 User’s Guide
2.3 INTERRUPT CONTROLLER
The equivalent of two 8259 Programmable Interrupt Controllers (PIC) are included on the AR-B1476 board. They
accept requests from peripherals, resolve priorities on pending interrupts in service, issue interrupt requests to the
CPU, and provide vectors which are used as acceptance indices by the CPU to determine which interrupt service
routine to execute.
Following is the system information of interrupt levels:
Interrupt Level
In
Description
NMI
Parity check
CTRL1
IRQ 0
IRQ 1
IRQ 2
CTRL2
System timer interrupt from timer 8254
Keyboard output buffer full
IRQ8 : Real time clock
IRQ9 : Rerouting to INT 0Ah from hardware IRQ2
IRQ10 : spare
IRQ11 : spare
IRQ12 : spare (PS/2 mouse)
IRQ13 : Math. coprocessor
IRQ14 : Hard disk adapter
IRQ15 : spare (Watchdog Timer)
IRQ 3
IRQ 4
IRQ 5
IRQ 6
IRQ 7
Serial port 2
Serial port 1
Parallel port 2
Floppy disk adapter
Parallel port 1
Figure 2-1 Interrupt Controller
2-2
AR-B1476 User’s Guide
2.3.1 I/O Port Address Map
Hex Range
Device
000-01F
DMA controller 1
020-021
Interrupt controller 1
022-023
ALI M1489/M1487
040-04F
Timer 1
050-05F
Timer 2
060-06F
8042 keyboard/controller
070-071
Real-time clock (RTC), non-maskable interrupt (NMI)
080-09F
DMA page registers
0A0-0A1
Interrupt controller 2
0C0-0DF
DMA controller 2
0F0
Clear Math Co-processor
0F1
Reset Math Co-processor
0F8-0FF
Math Co-processor
170-178
Fixed disk 1
1F0-1F8
Fixed disk 0
201
Game port
208-20A
EMS register 0
218-21A
EMS register 1
278-27F
Parallel printer port 2 (LPT 2)
2E8-2EF
Serial port 4 (COM 4)
2F8-2FF
Serial port 2 (COM 2)
300-31F
Prototype card/streaming type adapter
320-33F
LAN adapter
378-37F
Parallel printer port 1 (LPT 1)
380-38F
SDLC, bisynchronous
3A0-3AF
Bisynchronous
3B0-3BF
Monochrome display and printer port 3 (LPT 3)
3C0-3CF
EGA/VGA adapter
3D0-3DF
Color/graphics monitor adapter
3E8-3EF
Serial port 3 (COM 3)
3F0-3F7
Diskette controller
3F8-3FF
Serial port 1 (COM 1)
Table 2-2 I/O Port Address Map
2.3.2 I/O Channel Pin Assignment (Bus1)
I/O Pin
Signal Name
A1
-IOCHCK
Input/Output I/O Pin Signal Name
Input
B1
GND
Input/Output
Ground
A2
SD7
Input/Output
B2
RSTDRV
Output
A3
SD6
Input/Output
B3
+5V
Power
A4
SD5
Input/Output
B4
IRQ9
Input
A5
SD4
Input/Output
B5
-5V
Power
A6
SD3
Input/Output
B6
DRQ2
Input
A7
SD2
Input/Output
B7
-12V
Power
A8
SD1
Input/Output
B8
-ZWS
Input
A9
SD0
Input/Output
B9
+12V
Power
A10
-IOCHRDY
Input
B10
GND
Ground
A11
AEN
Output
B11
-SMEMW
Output
A12
SA19
Input/Output
B12
-SMEMR
Output
A13
SA18
Input/Output
B13
-IOW
Input/Output
A14
SA17
Input/Output
B14
-IOR
Input/Output
A15
SA16
Input/Output
B15
-DACK3
Output
A16
SA15
Input/Output
B16
DRQ3
Input
2-3
AR-B1476 User’s Guide
I/O Pin
Signal Name
A17
SA14
Input/Output I/O Pin Signal Name
Input/Output
B17
A18
SA13
Input/Output
B18
DRQ1
Input
A19
SA12
Input/Output
B19
-REFRESH
Input/Output
A20
SA11
Input/Output
B20
BUSCLK
Output
A21
SA10
Input/Output
B21
IRQ7
Input
A22
SA9
Input/Output
B22
IRQ6
Input
A23
SA8
Input/Output
B23
IRQ5
Input
A24
SA7
Input/Output
B24
IRQ4
Input
A25
SA6
Input/Output
B25
IRQ3
Input
A26
SA5
Input/Output
B26
-DACK2
Output
-DACK1
Input/Output
Output
A27
SA4
Input/Output
B27
TC
Output
A28
SA3
Input/Output
B28
BALE
Output
A29
SA2
Input/Output
B29
+5V
Power
A30
SA1
Input/Output
B30
OSC
Output
A31
SA0
Input/Output
B31
GND
Ground
Input/Output
Table 2-3 I/O Channel Pin Assignments
I/O Pin Signal Name
Input/Output
I/O Pin
Signal Name
C1
-SBHE
Input/Output
D1
-MEMCS16
Input
C2
LA23
Input/Output
D2
-IOCS16
Input
C3
LA22
Input/Output
D3
IRQ10
Input
C4
LA21
Input/Output
D4
IRQ11
Input
C5
LA20
Input/Output
D5
IRQ12
Input
C6
LA19
Input/Output
D6
IRQ15
Input
C7
LA18
Input/Output
D7
IRQ14
Input
C8
LA17
Input/Output
D8
-DACK0
Output
C9
-MRD16
Input/Output
D9
DRQ0
Input
C10
-MWR16
Input/Output
D10
-DACK5
Output
C11
SD8
Input/Output
D11
DRQ5
Input
C12
SD9
Input/Output
D12
-DACK6
Output
C13
SD10
Input/Output
D13
DRQ6
Input
C14
SD11
Input/Output
D14
-DACK7
Output
C15
SD12
Input/Output
D15
DRQ7
Input
C16
SD13
Input/Output
D16
+5V
Power
C17
SD14
Input/Output
D17
-MASTER
Input
C18
SD15
Input/Output
D18
GND
Ground
Table 2-4 I/O Channel Pin Assignments
2-4
AR-B1476 User’s Guide
2.4 REAL-TIME CLOCK AND NON-VOLATILE RAM
The AR-B1476 contains a real-time clock compartment that maintains the date and time in addition to storing
configuration information about the computer system. It contains 14 bytes of clock and control registers and 114
bytes of general purpose RAM. Because of the use of CMOS technology, it consumes very little power and can be
maintained for long period of time using an internal Lithium battery. The contents of each byte in the CMOS RAM
are listed as follows:
Address
Description
00
Seconds
01
Second alarm
02
Minutes
03
Minute alarm
04
Hours
05
Hour alarm
06
Day of week
07
Date of month
08
Month
09
Year
0A
Status register A
0B
Status register B
0C
Status register C
0D
Status register D
0E
Diagnostic status byte
0F
Shutdown status byte
10
Diskette drive type byte, drive A and B
11
Fixed disk type byte, drive C
12
Fixed disk type byte, drive D
13
Reserved
14
Equipment byte
15
Low base memory byte
16
High base memory byte
17
Low expansion memory byte
18
High expansion memory byte
19-2D
Reserved
2E-2F
2-byte CMOS checksum
30
Low actual expansion memory byte
31
High actual expansion memory byte
32
Date century byte
33
Information flags (set during power on)
34-7F
Reserved for system BIOS
Table 2-5 Real-Time Clock & Non-Volatile RAM
2.5 TIMER
The AR-B1476 provides three programmable timers, each with a timing frequency of 1.19 MHz.
Timer 0
The output of this timer is tied to interrupt request 0. (IRQ 0)
Timer 1
This timer is used to trigger memory refresh cycles.
Timer 2
This timer provides the speaker tone.
Application programs can load different counts into this timer to generate various sound frequencies.
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AR-B1476 User’s Guide
2.6 SERIAL PORT
The ACEs (Asynchronous Communication Elements ACE1 to ACE4) are used to convert parallel data to a serial
format on the transmit side and convert serial data to parallel on the receiver side. The serial format, in order of
transmission and reception, is a start bit, followed by five to eight data bits, a parity bit (if programmed) and one,
one and half (five-bit format only) or two stop bits. The ACEs are capable of handling divisors of 1 to 65535, and
produce a 16x clock for driving the internal transmitter logic.
Provisions are also included to use this 16x clock to drive the receiver logic. Also included in the ACE a completed
MODEM control capability, and a processor interrupt system that may be software tailored to the computing time
required handle the communications link.
The following table is summary of each ACE accessible register
DLAB
0
Port Address
base + 0
Register
Receiver buffer (read)
Transmitter holding register (write)
0
base + 1
Interrupt enable
X
base + 2
Interrupt identification (read only)
X
base + 3
Line control
X
base + 4
MODEM control
X
base + 5
Line status
X
base + 6
MODEM status
X
base + 7
Scratched register
1
base + 0
Divisor latch (least significant byte)
1
base + 1
Divisor latch (most significant byte)
Table 2-6 ACE Accessible Registers
(1) Receiver Buffer Register (RBR)
Bit 0-7: Received data byte (Read Only)
(2) Transmitter Holding Register (THR)
Bit 0-7: Transmitter holding data byte (Write Only)
(3) Interrupt Enable Register (IER)
Bit 0: Enable Received Data Available Interrupt (ERBFI)
Bit 1: Enable Transmitter Holding Empty Interrupt (ETBEI)
Bit 2: Enable Receiver Line Status Interrupt (ELSI)
Bit 3: Enable MODEM Status Interrupt (EDSSI)
Bit 4: Must be 0
Bit 5: Must be 0
Bit 6: Must be 0
Bit 7: Must be 0
(4) Interrupt Identification Register (IIR)
Bit 0: “0” if Interrupt Pending
Bit 1: Interrupt ID Bit 0
Bit 2: Interrupt ID Bit 1
Bit 3: Must be 0
Bit 4: Must be 0
Bit 5: Must be 0
Bit 6: Must be 0
Bit 7: Must be 0
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AR-B1476 User’s Guide
(5) Line Control Register (LCR)
Bit 0: Word Length Select Bit 0 (WLS0)
Bit 1: Word Length Select Bit 1 (WLS1)
WLS1
WLS0
Word Length
0
0
5 Bits
0
1
6 Bits
1
0
7 Bits
1
1
8 Bits
Bit 2: Number of Stop Bit (STB)
Bit 3: Parity Enable (PEN)
Bit 4: Even Parity Select (EPS)
Bit 5: Stick Parity
Bit 6: Set Break
Bit 7: Divisor Latch Access Bit (DLAB)
(6) MODEM Control Register (MCR)
Bit 0: Data Terminal Ready (DTR)
Bit 1: Request to Send (RTS)
Bit 2: Out 1 (OUT 1)
Bit 3: Out 2 (OUT 2)
Bit 4: Loop
Bit 5: Must be 0
Bit 6: Must be 0
Bit 7: Must be 0
(7) Line Status Register (LSR)
Bit 0: Data Ready (DR)
Bit 1: Overrun Error (OR)
Bit 2: Parity Error (PE)
Bit 3: Framing Error (FE)
Bit 4: Break Interrupt (BI)
Bit 5: Transmitter Holding Register Empty (THRE)
Bit 6: Transmitter Shift Register Empty (TSRE)
Bit 7: Must be 0
(8) MODEM Status Register (MSR)
Bit 0: Delta Clear to Send (DCTS)
Bit 1: Delta Data Set Ready (DDSR)
Bit 2: Training Edge Ring Indicator (TERI)
Bit 3: Delta Receive Line Signal Detect (DSLSD)
Bit 4: Clear to Send (CTS)
Bit 5: Data Set Ready (DSR)
Bit 6: Ring Indicator (RI)
Bit 7: Received Line Signal Detect (RSLD)
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AR-B1476 User’s Guide
(9) Divisor Latch (LS, MS)
LS
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 0:
Bit 1:
Bit 2:
Bit 3:
Bit 4:
Bit 5:
Bit 6:
Bit 7:
MS
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
Bit 15
Desired Baud Rate
Divisor Used to Generate 16x Clock
300
384
600
192
1200
96
1800
64
2400
48
3600
32
4800
24
9600
12
14400
8
19200
6
28800
4
38400
3
57600
2
115200
1
Table 2-7 Serial Port Divisor Latch
2.7 PARALLEL PORT
(1) Register Address
Port Address
Read/Write
base + 0
Write
base + 0
Read
base + 1
Read
base + 2
Write
Table 2-8 Registers’ Address
Register
Output data
Input data
Printer status buffer
Printer control latch
(2) Printer Interface Logic
The parallel portion of the SMC37C669 makes the attachment of various devices that accept eight bits of parallel
data at standard TTL level.
(3) Data Swapper
The system microprocessor can read the contents of the printer’s Data Latch through the Data Swapper by reading
the Data Swapper address.
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AR-B1476 User’s Guide
(4) Printer Status Buffer
The system microprocessor can read the printer status by reading the address of the Printer Status Buffer. The bit
definitions are described as follows:
7
6
5
4
3
2
1
0
X
X
X
-ERROR
SLCT
PE
-ACK
-BUSY
Figure 2-2 Printer Status Buffer
NOTE: X presents not used.
Bit 7: This signal may become active during data entry, when the printer is off-line during printing, or when the
print head is changing position or in an error state. When Bit 7 is active, the printer is busy and cannot
accept data.
Bit 6: This bit represents the current state of the printer’s ACK signal. A0 means the printer has received the
character and is ready to accept another. Normally, this signal will be active for approximately 5
microseconds before receiving a BUSY message stops.
Bit 5: A1 means the printer has detected the end of the paper.
Bit 4: A1 means the printer is selected.
Bit 3: A0 means the printer has encountered an error condition.
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AR-B1476 User’s Guide
(5) Printer Control Latch & Printer Control Swapper
The system microprocessor can read the contents of the printer control latch by reading the address of printer
control swapper. Bit definitions are as follows:
7
6
X
X
5
4
3
2
1
0
STROBE
AUTO FD XT
INIT
SLDC IN
IRQ ENABLE
DIR(write only)
Figure 2-3 Bit’s Definition
NOTE: X presents not used.
Bit 5: Direction control bit. When logic 1, the output buffers in the parallel port are disabled allowing data driven
from external sources to be read; when logic 0, they work as a printer port. This bit is writing only.
Bit 4: A1 in this position allows an interrupt to occur when ACK changes from low state to high state.
Bit 3: A1 in this bit position selects the printer.
Bit 2: A0 starts the printer (50 microseconds pulse, minimum).
Bit 1: A1 causes the printer to line-feed after a line is printed.
Bit 0: A0.5 microsecond minimum highly active pulse clocks data into the printer. Valid data must be present for
a minimum of 0.5 microseconds before and after the strobe pulse.
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AR-B1476 User’s Guide
3. SETTING UP THE SYSTEM
This section describes pin assignments for system’s external connectors and the jumpers setting.
!
!
Overview
System Setting
3.1 OVERVIEW
The AR-B1476 is a half size industrial grade CPU card that has been designed to withstand continuous operation
in harsh environments. This section provides hardware’s jumpers setting, the connectors’ locations, and the pin
assignment.
Figure 3-1 External System Location
3-1
AR-B1476 User’s Guide
3.2 SYSTEM SETTING
Jumper pins allow you to set specific system parameters. Set them by changing the pin location of jumper blocks.
(A jumper block is a small plastic-encased conductor [shorting plug] that slips over the pins.) To change a jumper
setting, remove the jumper from its current location with your fingers or small needle-nosed pliers. Place the
jumper over the two pins designated for the desired setting. Press the jumper evenly onto the pins. Be careful not
to bend the pins.
We will show the locations of the AR-B1476 jumper pins, and the factory-default setting.
CAUTION: Do not touch any electronic component unless you are safely grounded. Wear a grounded wrist strap
or touch an exposed metal part of the system unit chassis. The static discharges from your fingers can
permanently damage electronic components.
3.2.1 Hard Disk (IDE) Connector (CN1)
A 40-pin header type connector (CN1) is provided to interface with up to two embedded hard disk drives (IDE AT
bus). This interface, through a 40-pin cable, allows the user to connect up to two drives in a “daisy chain” fashion.
To enable or disable the hard disk controller, please use the BIOS Setup program. The following table illustrates
the pin assignments of the hard disk drive’s 40-pin connector.
2
1
Figure 3-2 CN1: Hard Disk (IDE) Connector
Pin
Signal
1
-RESET
3
DATA 7
5
DATA 6
7
DATA 5
9
DATA 4
11
DATA 3
13
DATA 2
15
DATA 1
17
DATA 0
19
GROUND
21
NC
23
-IOW A
25
-IOR A
27
-CHRDY A
29
NC
31
-IRQ A
33
SA 1
35
SA 0
37
CS 0
39
HD LED A
Table 3-1 HDD Pin Assignment
3-2
Pin
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
Signal
GROUND
DATA 8
DATA 9
DATA 10
DATA 11
DATA 12
DATA 13
DATA 14
DATA 15
NOT USED
GROUND
GROUND
GROUND
NOT USED
GROUND
-IO16
NOT USED
SA 2
CS 1
GROUND
AR-B1476 User’s Guide
3.2.2 FDD Port Connector (CN2)
The AR-B1476 provides a 34-pin header type connector for supporting up to two floppy disk drives.
To enable or disable the floppy disk controller, please use the BIOS Setup program.
2
1
Figure 3-3 CN2: FDD Port connector
Pin
Signal
Pin
Signal
1-33(odd)
GROUND
18
-DIRECTION
2
DRVEN 0
20
-STEP OUTPUT PULSE
4
NOT USED
22
-WRITE DATA
6
DRVEN 1
24
-WRITE GATE
8
-INDEX
26
-TRACK 0
10
-MOTOR ENABLE 0
28
-WRITE PROTECT
12
-DRIVE SELECT 1
30
-READ DATA
14
-DRIVE SELECT 0
32
-SIDE 1 SELECT
34
DISK CHANGE
16
-MOTOR ENABLE 1
Table 3-2 FDD Pin Assignment
3.2.3 Parallel Port Connector (CN4)
To use the parallel port, an adapter cable has to be connected to the CN4 (26-pin header type) connector. This
adapter cable is mounted on a bracket and is included in your AR-B1476 package. The connector for the parallel
port is a 25 pin D-type female connector.
2
1
Parallel Port Connector
14
1
25
13
D-Type Connector
Figure 3-4 CN4: Parallel Port Connector
CN4
DB-25
Signal
1
1
-Strobe
3
2
Data 0
5
3
Data 1
7
4
9
5
11
13
CN4
DB-25
Signal
2
14
-Auto Form Feed
4
15
-Error
6
16
-Initialize
Data 2
8
17
-Printer Select In
Data 3
10
18
Ground
6
Data 4
12
19
Ground
7
Data 5
14
20
Ground
15
8
Data 6
16
21
Ground
17
9
Data 7
18
22
Ground
19
10
-Acknowledge
20
23
Ground
21
11
Busy
22
24
Ground
23
12
Paper
24
25
Ground
25
13
Printer Select
26
Table 3-3 Parallel Port Pin Assignment
--
No Used
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AR-B1476 User’s Guide
3.2.4 PC/104 Connector
(1) 64 Pin PC/104 Connector Bus A & B (CN7)
2
64
1
63
64-Pin PC/104 Connector
Figure 3-5 CN7: 64 Pin PC/104 Connector Bus A & B
CN7
1 2
-IOCHCK --SD7 --SD6 --SD5 --SD4 --SD3 --SD2 --SD1 --SD0 --IOCHRDY--AEN --SA19 --SA18 --SA17 --SA16 --SA15 --SA14 --SA13 --SA12 --SA11 --SA10 --SA9 --SA8 --SA7 --SA6 --SA5 --SA4 --SA3 --SA2 --SA1 --SA0 --GND ---
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
--- GND
--- RSTDRV
--- +5 VDC
--- IRQ9
--- -5 VDC
--- DRQ2
--- -12 VDC
--- -ZWS
--- +12 VDC
--- GND
--- -SMEMW
--- -SMEMR
--- -IOW
--- -IOR
--- -DACK3
--- DRQ3
--- -DACK1
--- DRQ1
--- -REFRESH
--- BUSCLK
--- IRQ7
--- IRQ6
--- IRQ5
--- IRQ4
--- IRQ3
--- -DACK2
--- TC
--- BALE
--- +5 VDC
--- OSC
--- GND
--- GND
Figure 3-6 CN7: 64-Pin PC/104 Connector Bus A & B
(2) 40 Pin PC/104 Connector Bus C & D (CN8)
1
39
2
40
40 Pin PC/104 Connector
Figure 3-7 CN8: 40 Pin PC/104 Connector Bus C & D
CN8
1
GND ---BHE --LA23 --LA22 --LA21 --LA20 --LA19 --LA18 --LA17 ---MRD16 ---MWR16 --SD8 --SD9 --SD10 --SD11 --SD12 --SD13 --SD14 --SD15 --Not Used ---
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
2
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20
--- GND
--- -MEM16
--- -IOCS16
--- IRQ10
--- IRQ11
--- IRQ12
--- IDEIRQA
--- IDEIRQB
--- -DACK0
--- DRQ0
--- -DACK5
--- DRQ5
--- -DACK6
--- DRQ6
--- -DACK7
--- DRQ7
--- +5 VDC
--- -MASTER
--- GND
--- GND
Figure 3-8 CN8: 40-Pin PC/104 Connector Bus C & D
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AR-B1476 User’s Guide
(3) I/O Channel Signal Description
Name
Description
BUSCLK [Output]
The BUSCLK signal of the I/O channel is asynchronous to
the CPU clock.
RSTDRV [Output]
This signal goes high during power-up, low line-voltage or
hardware reset
SA0 - SA19
The System Address lines run from bit 0 to 19. They are
[Input / Output] latched onto the falling edge of "BALE"
LA17 - LA23
The Unlatched Address line run from bit 17 to 23
[Input/Output]
SD0 - SD15
System Data bit 0 to 15
[Input/Output]
BALE [Output]
The Buffered Address Latch Enable is used to latch SA0 SA19 onto the falling edge. This signal is forced high
during DMA cycles
-IOCHCK [Input]
The I/O Channel Check is an active low signal which
indicates that a parity error exist on the I/O board
IOCHRDY
This signal lengthens the I/O, or memory read/write cycle,
[Input, Open collector] and should be held low with a valid address
IRQ 3-7, 9-12, 14, 15
The Interrupt Request signal indicates I/O service request
[Input] attention. They are prioritized in the following sequence :
(Highest) IRQ 9, 10, 11, 12, 13, 15, 3, 4, 5, 6, 7 (Lowest)
-IOR
The I/O Read signal is an active low signal which instructs
[Input/Output] the I/O device to drive its data onto the data bus
-IOW [Input/Output] The I/O write signal is an active low signal which instructs
the I/O device to read data from the data bus
-SMEMR [Output]
The System Memory Read is low while any of the low 1
mega bytes of memory are being used
-MEMR
The Memory Read signal is low while any memory location
[Input/Output] is being read
-SMEMW [Output]
The System Memory Write is low while any of the low 1
mega bytes of memory is being written
-MEMW
The Memory Write signal is low while any memory location
[Input/Output] is being written
DRQ 0-3, 5-7 [Input] DMA Request channels 0 to 3 are for 8-bit data transfers.
DMA Request channels 5 to 7 are for 16-bit data transfers.
DMA request should be held high until the corresponding
DMA has been completed. DMA request priority is in the
following sequence:(Highest) DRQ 0, 1, 2, 3, 5, 6, 7
(Lowest)
-DACK 0-3, 5-7
The DMA Acknowledges 0 to 3, 5 to 7 are the
[Output] corresponding acknowledge signals for DRQ 0 to 3 and 5
to 7
AEN [output]
The DMA Address Enable is high when the DMA controller
is driving the address bus. It is low when the CPU is driving
the address bus
-REFRESH
This signal is used to indicate a memory refresh cycle and
[Input/Output] can be driven by the microprocessor on the I/O channel
TC [Output]
Terminal Count provides a pulse when the terminal count
for any DMA channel is reached
SBHE [Input/Output] The System Bus High Enable indicates the high byte SD8 SD15 on the data bus
3-5
AR-B1476 User’s Guide
Name
Description
-MASTER [Input]
The MASTER is the signal from the I/O processor which
gains control as the master and should be held low for a
maximum of 15 microseconds or system memory may be
lost due to the lack of refresh
-MEMCS16
The Memory Chip Select 16 indicates that the present data
[Input, Open collector] transfer is a 1-wait state, 16-bit data memory operation
-IOCS16
The I/O Chip Select 16 indicates that the present data
[Input, Open collector] transfer is a 1-wait state, 16-bit data I/O operation
OSC [Output]
The Oscillator is a 14.31818 MHz signal used for the color
graphic card
-ZWS
The Zero Wait State indicates to the microprocessor that
[Input, Open collector] the present bus cycle can be completed without inserting
additional wait cycle
Table 3-4 I/O Channel Signal’s Description
3.2.5 LED Header
(1) External Power LED & Keyboard Lock Header (J6)
1 Power LED+
2 No Used
3 Power LED4 Key-Lock+
5 Key-LockFigure 3-9 J6: Power LED & Keyboard Lock Header
(2) HDD LED Header (J3)
1 LED+
2 1
2 LED-
Figure 3-10 J3: HDD LED Header
(3) Watchdog LED Header (J1)
1 LED+
2 LEDFigure 3-11 J1: Watchdog LED Header
3-6
AR-B1476 User’s Guide
3.2.6 Serial Port
(1) RS-232/RS-485 Select (SW1, JP4 & JP9)
JP4 selects COM B port, and adjusts the CN5 connector is RS-485 or RS-232C. JP9 selects COM A port for using
DB2 for RS-232C or connects External RS-485. SW1 adjusts the onboard RS-485.
(A) COM-A RS-485 Adapter Select (JP9)
3
Reserved for Acrosser's
2 RS-485 Adapter Used Only
1
3
RS-232C
2 Factory-Default Setting
1
Figure 3-12 JP9: COM-A RS-485 Adapter Select
(B) COM-B RS-485 Adapter Select (JP4)
1
Reserved for Acrosser's
RS-485 Adapter Used Only
2
3
1
RS-232C
Factory-Default Setting
2
3
Figure 3-13 JP4: COM-B RS-485 Adapter Select
(C) COM-B RS-232/RS-485 Select (SW1)
SW1
On
RS-232C
Factory-Default Setting
Off
1
2
3
4
SW1
On
Reserved for Acrosser's
RS-485 Adapter Used Only
Off
1
2
3
4
Figure 3-14 SW1: COM-B RS-232/RS-485 Select
(2) RS-485 Terminator Select (JP2)
1 2
1 2
OFF
ON
Factory Preset
Figure 3-15 JP2: RS-485 Terminator Select
3-7
AR-B1476 User’s Guide
(3) RS-485 Connector (J4)
J4 is onboard RS-485 header, J4 pin assignments are as follows:
1 N485+
2 N4851 2 3
3 GND
J4 (COM B)
Figure 3-16 J4: RS-485 Connector
(4) RS-232 Connector (CN5 & DB2)
There are two serial ports with EIA RS-232C interface on the AR-B1476. COM A uses one onboard D-type 9 pin
male connector (DB2) and COM B uses one 10 pin header (CN5) which are located at the right side of the card.
To configure these two serial ports, use the BIOS Setup program, and adjust the jumpers on JP4 and JP9.
The pin assignments of the DB2 and CN5 for serial port A & B are as follows:
DB2 (COM A)
-DCD 1
RXD 2
TXD 3
-DTR 4
GND 5
CN5 (COM B)
6-DSR
7-RTS
8-CTS
9-RI
1
2
3
4
5
6
7
8
9
10
Figure 3-17 DB2 & CN5: RS-232 Connector
CN5
DB2
Signal
CN5
DB2
1
1
-DCD
2
6
-DSR
3
2
RXD
4
7
-RTS
5
3
TXD
6
8
-CTS
7
4
-DTR
8
9
-RI
9
5
GND
10
-Table 3-5 RS-232 Connector Pin Assignment
3-8
Signal
Not Used
AR-B1476 User’s Guide
3.2.7 Keyboard Connector (CN9 & J9)
CN9 is a Mini-DIN 6-pin connector. This keyboard connector is a PS/2 type keyboard connector. This connector is
also for a standard IBM-compatible keyboard with the keyboard adapter cable. J9 provides another way of
connecting a keyboard to the AR-B1476.
1 DATA
2 Not Used
3
3 GND
4 VCC
5 CLOCK
1
2
4
6
5
6 Not Used
CN9 (Front View)
Figure 3-18 CN9: Keyboard Connector
J9
1 CLOCK
2 DATA
3 Not Used
4 GND
5 VCC
Figure 3-19 J9: AUX. Keyboard Connector
3.2.8 External Speaker Header (J2)
Besides the onboard buzzer, you can use an external speaker by connecting to the J2 header.
1 Speaker+
2 Speaker1 2 3 4
3 Speaker4 Speaker-
Figure 3-20 J2: Speaker Header
3.2.9 Power Connector (J10)
J10 is an 8-pin power connector. You can directly connect the power supply to the onboard power connector for
stand-alone applications.
1
2
3
4
5
6
7
8
GND
+5 VDC
+5 VDC
GND
GND
+12 VDC
-12 VDC
-5 VDC
Figure 3-21 J10: Power Connector
3-9
AR-B1476 User’s Guide
3.2.10 Reset Header (J8)
J8 is used to connect to an external reset switch. Shorting these two pins will reset the system.
1 Reset+
2 GND
Figure 3-22 J8: Reset Header
3.2.11 PS/2 Mouse Connector
(1) PS/2 Mouse IRQ12 Setting (JP8)
The default of <Enabled> allows the system detecting a PS/2 mouse on boot. If detected, IRQ12 will be used for
the PS/2 mouse. IRQ12 will be reserved for expansion cards and therefore the PS/2 mouse will not function.
JP8
1
2
Enable
Factory Preset
1
2
JP8
Disable
Figure 3-23 JP8: PS/2 Mouse IRQ12 Setting
CAUTION: After adjusting the JP8 correctly, the user must set the <PS/2 Mouse Support> option to Enabled in the
BIOS <Advanced CMOS Setup> Menu. Then the PS/2 mouse can be used.
(2) PS/2 Mouse Connector (CN6 & J7)
To use the PS/2 interface, an adapter cable has to be connected to the CN6 and J7 (6-pin header type) connector.
This adapter cable is mounted on a bracket and is included in your AR-B1476 package. The connector for the
PS/2 mouse is a Mini-DIN 6-pin connector. Pin assignments for the PS/2 port connector are as follows:
DATA 1
N.C. 2
GND 3
VCC 4
CLOCK 5
N.C. 6
1
J7
2
3
4
5
6
CN6
6 Pin Mini-DIN
Figure 3-24 CN6 & J7: PS/2 Mouse Connector
3-10
AR-B1476 User’s Guide
3.2.12 CPU Setting
The AR-B1476 accepts many types of microprocessors such as Intel/AMD/Cyrix 486DX/DX2/DX4. All of these
CPUs include an integer processing unit, floating-point processing unit, memory-management unit, and cache.
They can give a two to ten-fold performance improvement in speed over the 386 processor, which is depending on
the clock speeds used and specific application. Like the 386 processor, the 486 processor includes both segmentbased and page-based memory protection schemes. The instruction of processing time is reduced by on-chip
instruction pipelining. By performing fast, on-chip memory management and caching, the 486 processor relaxes
requirements for memory response for a given level of system performance.
(1) CPU Logic Core Voltage Select (P1 & P2)
2 4 6
2 4 6
P1
P1
1 3 5
1 3 5
P2
P2
1 2 3
3.45V -- Factory Default Setting
1 2 3
5V
Figure 3-25 P1 & P2: CPU Logic Core Voltage
(2) AMD 3X/4X CPU Select (JP5)
1
JP5
1
JP5
2
AMD 4X
2
AMD 3X
Factory Default Setting
Figure 3-26 JP5: AMD 3X/4X CPU Select
(3) PCI Clock Select (JP7)
2 4 6
2 4 6
JP7
JP7
1 3 5
PCICLK=CPUCLK
Factory Default Setting
1 3 5
PCICLK=1/2 CPUCLK
Figure 3-27 JP7: PCI Clock Select
(4) CPU Clock Multiplier Select (JP6)
A
B
Base Clock
Close
Open
Close
Open
Close
Close
Open
Open
50MHz
40MHz
33.3MHz
25MHz
Note
Factory Preset
A B C
2 4 6
JP6
1 3 5
Table 3-6 JP6: CPU Clock Multiplier Select
3-11
AR-B1476 User’s Guide
3.2.13 Memory Setting
(1) DRAM Configuration
There are two 32-bit memory banks on the AR-B1476 board. It can be one-side or double-side SIMM (Single-Line
Memory Modules) which is designed to accommodate 256KX36 bit to 16MX36-bit SIMMs. This provides the user
with up to 64MB of main memory. The 32-bit SIMM (without parity bit) also can be used on AR-B1476 board.
There are listing on-board memory configurations available. Please refer to the following table for details:
SIMM1
Total Memory
256KX32(X36)
1MB
512KX32(X36)
2MB
1MX32(X36)
4MB
2MX32(X36)
8MB
4MX32(X36)
16MB
8MX32(X36)
32MB
16MX32(X36)
Table 3-7 DRAMs’ Configuration
64MB
(2) Cache RAM (JP1)
The AR-B1476 can be configured to provide a write-back or write-through cache scheme and support 512KB
cache systems. A write-back cache system may provide better performance than a write-through cache system.
The BIOS Setup program allows you to set the cache scheme either write-back or write-through, either the internal
cache selection.
JP1
1
2
Write-Through
JP1
1
2
Write-Back
Factory Default Setting
Figure 3-28 JP1: Write-Through/Write-Back CPU Select
(3) Cache Size Select (CP1)
The CP1 is located on the back of CPU card. The factory setting is fixed is 512K Byte, this function can’t be
supplied for user adjusting. The type of setting’s table is in following.
CP1
Data RAM
OPEN
four 64K x 8
CLOSE
four 128K x 8
Table 3-8 Cache Size Selected
3-12
TAG RAM
32K x 8
32K x 8
SIZE
256KB
512KB
AR-B1476 User’s Guide
3.2.14 DiskOnChip Installation (SW1)
The DiskOnChip is a new generation of high performance single-chip Flash Disk. It provides a Flash Disk in a
standard 32-pin DIP package.
This unique data storage solution offers a better, faster, and more cost-effective Flash Disk for Single Board
embedded systems. The DiskOnChip provides a Flash Disk that does not require any bus, slot or connector.
Simply insert the DiskOnChip into 32-pin socket U16 position on the CPU board. It is the optimal solution for single
board computers, it is a small, fully functional, easy to integrate, plug-and-play Flash Disk with a very low power
consumption.
The DiskOnChip is fully tested and formatted before the product is shipped.
(1) DiskOnChip Hardware Installation
Step 1: Make sure the target platform is powered OFF
Step 2: Plug the DiskOnChip device into the U16 socket. Verify the direction is correct (pin 1 of the DiskOnChip
is aligned with pin 1 of the U16 socket)
Step 3: Power up the system
Step 4: During power up you may observe the messages displayed by the DiskOnChip when its drivers are
automatically loaded into system’s memory
Step 5: At this stage the DiskOnChip can be accessed as any disk in the system
Step 6: If the DiskOnChip is the only disk in the system, it will appear as the first disk (drive C: in DOS)
Step 7: If there are more disks besides the DiskOnChip, it will appear by default as the last drive, unless it was
programmed as first drive.
Step 8: If you want the DiskOnChip to be bootable, copy the operating system files into the DiskOnChip by
using the standard DOS command.
(2) DiskOnChip Memory Address Setting (SW1)
SW1
SW1
On
On
Off
Off
1
2
3
4
1
OFF
Factory-Default Setting
2
3
4
CC00H
SW1
SW1
On
On
Off
Off
1
2
3
4
1
C800H
2
3
4
D000H
Figure 3-29 SW1: DiskOnChip Memory Address Setting
(3) Configuring the DiskOnChip as a Bootable Disk
The DiskOnChip fully supports the BOOT capability. In order for the DiskOnChip to be bootable, it should be DOS
formatted as bootable, like any floppy or hard disk that required to be booted.
SYS D:
Change the disk into bootable (assuming the DiskOnChip is disk D)
3-13
AR-B1476 User’s Guide
4. CRT/LCD FLAT PANEL DISPLAY
This section describes the configuration and installation procedure using LCD and CRT display.
!
!
!
CRT Connector
LCD Flat Panel Display
Supported LCD Panel
4.1 CRT CONNECTOR (DB1)
The AR-B1476 supports CRT color monitors. AR-B1476 used onboard VGA chipset and supported 1MB on-board
VRAM. For different VGA display modes, your monitor must possess certain characteristics to display the mode
you want.
To connect to a CRT monitor, an adapter cable has to be connected to the DB1 connector. DB1 is used to
connect with a VGA monitor when you are using the on-board VGA controller as a display adapter. Pin assignments
for the DB1 connector are as follows:
DB1 (CRT Connector)
6
11
1
2
3
4
5
10
15
1 Red
2 Green
3 Blue
13 Horizontial Sync
14 Vertical Sync
4, 9, 11, 12, & 15 Not used
5 & 10 Ground
6, 7 & 8 AGND
Figure 4-1 DB1: CRT Connector
4.2 LCD FLAT PANEL DISPLAY
This section describes the configuration and installation procedure for a LCD display. Skip this section if you are
using a CRT monitor only.
Use the Flash memory Writer utility to download the new BIOS file into the ROM chip to configure the BIOS default
settings for different types of LCD panels. Next, set your system properly and configure the AR-B1476 VGA
module for the right type of LCD panel you are using.
The following shows the block diagram of the system when using the AR-B1476 with a LCD display.
LCD
Panel
AR-B1476
CPU Boad
VBL Control
+12V, +5V
VEE
Inverter
Board
FL HIGH
Voltage
Figure 4-2 LCD Panel Block Diagram
4-1
AR-B1476 User’s Guide
The block diagram shows that the AR-B1476 still needs components to use with a LCD panel. The inverter board
provides the control for the brightness and the contrast of the LCD panel. The inverter is also the components that
supply the high voltage to drive the LCD panel. Each item will be explained further in the section.
Pin 1
Inverter & Contrast
CN3
J5
LCD
Panel
AR-B1476
CPU Board
Pin 1
Figure 4-3 LCD Panel Cable Installation Diagram
NOTE: Be careful with the pin orientation when installing connectors and the cables. A wrong connection can easily
destroy your LCD panel. Pin 1 of the cable connector is indicated with a sticker and pin1 of the ribbon
cable is usually has a different color.
4.2.1 Inverter Board Description
The inverter board supplies high voltage signals to drive the LCD panel by converting the 12 volt signal from the
AR-B1476 into a high voltage AC signal for LCD panel. It can be installed freely on the space provided over the
VR board. If the VR board is installed on the bracket, you have to provide a place to install the inverter board into
your system.
4.2.2 LCD Connector
(1) DE/E Signal from M or LP Select (JP3)
1 2 3
1 2 3
DE/M
E/LP
Factory Preset
Figure 4-4 JP3: DE/E Signal from M or LP
(2) LCD Control Connector (J5)
J5 is a 5-pin connector that attaches to the Contrast and Backlight board. Its pin assignment is shown below:
1 2 3 4 5
1
2
3
4
5
ENABLK
ENVEE
+12V
GND
VEE
Figure 4-5 J5: LCD Control Connector
(3) Touch Screen Connector (J11)
1 RXD
2 TXD
1 2 3
3 GND
Figure 4-6 J11: Touch Screen Connector
4-2
AR-B1476 User’s Guide
(4) LCD Panel Display Connector (CN3)
Attach a display panel connector to this 44-pin connector with pin assignments as shown below:
2
44
1
43
Figure 4-7 CN3: LCD Display Connector
Pin
Signal
1
GND
3
GND
5
FLM
7
P0
9
P2
11
P4
13
GND
15
P7
17
P9
19
P11
21
P12
23
P14
25
P16
27
GND
29
P19
31
P21
33
P23
35
VCC
37
+12V
39
GND
41
DE
43
GND
Table 4-1 LCD Display Assignment
Pin
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
Signal
SHFCLK
LP
GND
P1
P3
P5
P6
P8
P10
GND
P13
P15
P17
P18
P20
P22
GND
VCC
+12V
GND
ENABLK
VEE
4.3 SUPPORTED LCD PANEL
At present, this VGA card can provide a solution with an inverter board for the following list of standard LCD
panels. Consult your Acrosser representative for new developments. When using other models of standard LCD
panels in the market.
NO. Manufacture
Model No.
1
NEC
NL-6448AC30-10
2
NEC
NL-6448AC32-10
3
NEC
NL-6448AC33-10
4
HITACHI
LMG5371
5
HITACHI
LMG9200
6
HITACHI
LMG9400
7
ORION
OGM-640CN03C-S
8
SHARP
LQ10D321
Table 4-2 LCD Panel Type List
Description
TFT 9.4”
TFT 10.2”
TFT 10.4”
MONO 9.4” Dual Scan
DSTN 9.4”
DSTN 10.4”
DSTN 10.4”
TFT 10.4”
CAUTION: 1. If you want to connect the LCD panel, you must update the AR-B1476’s BIOS, then you can setup
the corrected BIOS. Please contact Acrosser for the latest BIOS update.
2. If user needs to update the BIOS version or connect other LCD, please contact the sales department.
The detail supported LCDs are listed in the Acrosser Web site, user can download the suitable BIOS.
The address is as follows:
http:\\www.acrosser.com
4-3
AR-B1476 User’s Guide
5. INSTALLATION
This chapter describes the procedure of the utility diskette installation. The following topics are covered:
!
!
!
Overview
Utility Diskette
Watchdog Timer
5.1 OVERVIEW
This chapter provides information for you to set up a working system based on the AR-B1476 CPU board. Please
read the details of the CPU board’s hardware descriptions before installation carefully, especially jumpers’ setting,
switch settings and cable connections.
Follow steps listed below for proper installation:
Step 1 :
Read the CPU card’s hardware description in this manual.
Step 2 :
Install any DRAM SIMM onto the CPU card. (or user can skip this step because that the AR-B1476
embedded on-board DRAM)
Step 3 :
Set jumpers.
Step 4 :
Make sure that the power supply connected to your passive CPU board backplane is turned off.
Step 5 :
Plug the CPU card into a free AT-bus slot or PICMG slot on the backplane and secure it in place with
a screw to the system chassis.
Step 6 :
Connect all necessary cables. Make sure that the FDC, HDC, serial and parallel cables are
connected to pin 1 of the related connector.
Step 7 :
Connect the hard disk/floppy disk flat cables from the CPU card to the drives. Connect a power
source to each drive.
Step 8 :
Plug the keyboard into the keyboard connector.
Step 9 :
Turn on the power.
Step 10:
Configure your system with the BIOS Setup program then re-boot your system.
Step 11:
If the CPU card does not work, turn off the power and read the hardware description carefully again.
Step 12:
If the CPU card still does not perform properly, return the card to your dealer for immediate service.
5.2 UTILITY DISKETTE
AR-B1476 provides two VGA driver diskettes. It supports WIN31, WIN95, WINNT 4.0 and OS/2. If your operating
system is the other operating system, please attach Acrosser that will provide the technical supporting for the VGA
resolution.
There are two diskettes: disk 1 is for WIN31, WIN95 & WINNT4.0 VGA resolution; disk 2 is for OS/2 VGA
resolution. While user extracted the compressed files there is the README.* file in each sub-directories. Please
refer to the file of README for any troubleshooting before install the driver.
5-1
AR-B1476 User’s Guide
5.2.1 VGA Driver
(1) WIN 3.1 Driver
For the WIN31 operating system, user must in the DOS mode decompress the compress file. And then as to the
steps:
Step 1:
Make the new created directory to put the VGA drivers.
C:\>MD VGAW31
Step 2:
Insert the Utility Disk #1 in the floppy disk drive, and then copy the compress file—D54XW31P.ZIP,
and the extract program—PKUNZIP.EXE, in the new created directory.
C:\>COPY A:\ D54XW31P.ZIP C:\VGAW31
C:\>COPY A:\PKUNZIP.EXE C:\VGAW31
Step 3:
Change directory to the new created directory, and extract the compress file.
C:\>CD VGAW31
C:\VGAW31>PKUNZIP -d D54XW31P.ZIP
Step 4:
And then re-name the SET545P.SCP file as SETUP5XX.SCP. Acrosser recommends the method
as:
C:\VGAW31>COPY SET545P.SCP SETUP5XX.SCP
Step 5:
In the DOS mode execute the SETUP.EXE file.
C:\VGAW31>SETUP
Step 6:
The screen shows the chip type, and presses any key enter the main menu.
CHIPS 655XX - PCI Display Drivers
Preliminary Version 3.3.0
Step 7:
There are some items for choice to setup. Please choose the <Windows Version 3.1> item, notice
the function key defined. Press [ENTER] selected the <All Resolutions>, when this line appears [*]
symbol, that means this item is selected. Press [End] starts to install.
Step 8:
The screen will show the dialog box to demand user typing the WIN31’s path.
C:\WINDOWS.
Step 9:
Follow the setup steps’ messages execute. As completed the setup procedure will generate the
message as follow.
The default is
Installation is done!
Change to your Windows directory and type SETUP to run the Windows Setup program. Choose
one of the new drivers marked by an *. Please refer to the User’s Guide to complete the installation.
5-2
Step 10:
Presses [Esc] return the main menu, and re-press [Esc] return to the DOS mode.
Step 11:
In the WIN31, you can find the <Chips CPL> icon located in the {CONTROL PANEL} group.
Step 12:
Adjust the <Refresh Rate>, <Cursor Animation>, <Font size>, <Resolution>, and <Big Cursor>.
AR-B1476 User’s Guide
(2) WIN 95 Driver
For the WIN95 operating system, user must in the DOS mode decompress the compress file. And then as to the
steps:
Step 1:
Make the new created directory to put the VGA drivers.
C:\>MD VGAW95
Step 2:
Insert the Utility Disk #1 in the floppy disk drive, and then copy the compress file—D55XW95.ZIP,
and the extract program—PKUNZIP.EXE, in the new created directory.
C:\>COPY A:\D55XW95.ZIP C:\VGAW95
C:\>COPY A:\PKUNZIP.EXE C:\VGAW95
Step 3:
Change directory to the new created directory, and extract the compress file.
C:\>CD VGAW95
C:\VGAW95>PKUNZIP -d D55XW95.ZIP
Step 4:
Enter the WIN95 operation system and please choose the <SETTING> item of the <DISPLAY> icon
in the {CONTROL PANEL}. Please select the <From Disk Install> item, and type the factory source
files’ path.
C:\VGAW95
Step 5:
And then you can find the <Chips and Tech 65545 PCI (new)> item, select it and click the <OK>
button.
Step 6:
Finally, user can find the <DISPLAY> icon adds the <Chips> item. You can select this item, and
adjust the <Screen Resolution>, <Refresh Rate>, <Font Size>…and other functions. Please refer to
the messages during installation.
(3) WINNT 4.0 Driver
For the WINNT4.0 operating system, user must in the DOS mode decompress the compress file. And then as to
the steps:
Step 1:
Make the new created directory to put the VGA drivers.
C:\>MD VGANT40
Step 2:
Insert the Utility Disk #1 in the floppy disk drive, and then copy the compress file—D5XXNT4.ZIP,
and the PKUNZIP.EXE program—, in the new created directory.
C:\>COPY A:\D5XXNT4.ZIP C:\VGANT40
C:\>COPY A:\PKUNZIP.EXE C:\VGANT40
Step 3:
Change directory to the new created directory, and extract the compress file.
C:\>CD VGANT40
C:\ VGANT40>PKUNZIP -d D5XXNT4.ZIP
Step 4:
Enter the WINNT4.0 operation system and please choose the <SETTING> item of the <DISPLAY>
icon in the {CONTROL PANEL}. Please select the <From Disk Install> item, and type the factory
source files’ path.
C:\VGANT40
Step 5:
And then you can find the <Chips and Tech 65545 PCI (new)> item, select it and click the <OK>
button.
Step 6:
Finally, user can find the <DISPLAY> icon adds the <Chips> item. You can select this item, and
adjust the <Screen Resolution>, <Refresh Rate>, <Font Size>…and other function. Please refer to
the messages during installation.
5-3
AR-B1476 User’s Guide
(4) OS/2 Warp Driver
The following steps must be performed before you install the 65545/65548 display’s driver:
CAUTION:
1. OS/2 DOS Support must be installed.
2. If you previously installed SVGA support, you must do the following:
a) Close all DOS Full Screen and WIN-OS2 sessions.
b) Reset the system to VGA mode. VGA is the default video mode enabled when OS/2 is installed. To
restore VGA mode, use Selective Install and select VGA for Primary Display. For more information on
this procedure, see the section on Changing Display Adapter Support in the OS/2 Users Guide.
To install this driver, do the following steps:
Step 1:
Open an OS/2 full screen or windowed session.
Step 2:
Place the 65545/65548 PCI Display Driver Diskette in drive A. (DISK #2)
Step 3:
Because the diskette enclosed the compress file, to extract file had to as the steps.
Step 4:
In the OS/2-DOS mode, make the VGA directory for decompress the driver.
C:\>MD VGAOS2
C:\>CD VGAOS2
C:\VGAOS2>COPY A:\*.*
C:\VGAOS2>PKUNZIP -d D54XOS2P.ZIP
Step 5:
At the OS/2 command prompt, type the following commands to copy the files to the OS/2 drive:
C:\VGAOS2> SETUP C:\VGAOS2 C: <ENTER>
Step 6:
When the Setup Program is completed, you will need to perform a shutdown and then restart the
system in order for changes to take effect.
Step 7:
Please refer to the README.TXT file, there is detail description, user had to according to the
installation step by step. When install completed, user can adjust the VGA resolution in the
SYSTEM icon <SCREEN> item of the <SYSTEM SETUP>.
5.2.2 BIOS FLASH Utility
The main function of AMIFLASH.COM supports BIOS update. The AR-B1476 can provide FLASH BIOS update
function for you to easily upgrade newer BIOS version. Please contact Acrosser engineer to support the
modification of the BIOS.
1. Use the AMIFLASH.COM program to update the BIOS setting function.
2. And then refer to the section “BIOS Console”, as the steps to modify BIOS.
3. Now the CPU board’s BIOS is the newest, user can use this program to modify BIOS function in the future,
when the BIOS adding some function.
5-4
AR-B1476 User’s Guide
5.3 WATCHDOG TIMER
This section describes how to use the Watchdog Timer, disabled, enabled, and trigger.
The AR-B1476 is equipped with a programmable time-out period watchdog timer. User can use the program to
enable the watchdog timer. Once you have enabled the watchdog timer, the program should trigger it every time
before it times out. If your program fails to trigger or disable this timer before it times out because of system hangup, it will generate a reset signal to reset the system. The time-out period can be programmed to be 3 to 42
seconds.
Enable (D7)
Time Base
Time Factor (D0-D2)
Watchdog
Register
Write and Trigger
Counter
and
Compartor
Watchdog
LED
Figure 5-1 Watchdog Block Diagram
RESET
5.3.1 Watchdog Timer Setting
The watchdog timer is a circuit that may be used from your program software to detect crashes or hang-ups.
Whenever the watchdog timer is enabled, the LED will blink to indicate that the timer is counting. The watchdog
timer is automatically disabled after reset.
Once you have enabled the watchdog timer, your program must trigger the watchdog timer every time before it
times-out. After you trigger the watchdog timer, it will be set to zero and start to count again. If your program fails
to trigger the watchdog timer before time-out, it will generate a reset pulse to reset the system or trigger the IRQ15
signal to tell your program that the watchdog is times out.
The factor of the watchdog timer time-out constant is approximately 6 seconds. The period for the watchdog timer
time-out period is between 1 to 7 timer factors.
If you want to reset your system when watchdog times out, the following table listed the relation of timer factors
between time-out periods.
Time Factor
80H
81H
82H
83H
84H
85H
86H
87H
Table 5-1 Time-Out Setting
Time-Out Period (Seconds)
3
6
12
18
24
30
36
42
If you want to generate IRQ15 signal to warn your program when watchdog times out, the following table listed the
relation of timer factors between time-out period. And if you use the IRQ15 signal to warn your program when
watchdog timer out, please enter the BIOS Setup the <Peripheral Setup> menu, the <OnBoard PCI IDE> and <IDE
Prefetch> these two items must set to Primary.
Time Factor
0C0H
0C1H
0C2H
0C3H
0C4H
0C5H
0C6H
0C7H
Table 5-2 Time-Out Setting
Time-Out Period (Seconds)
3
6
12
18
24
30
36
42
5-5
AR-B1476 User’s Guide
NOTE: 1. If you program the watchdog to generate IRQ15 signal when it times out, you should initial IRQ15
interrupt vector and enable the second interrupt controller (8259 PIC) in order to enable CPU to process
this interrupt. An interrupt service routine is required too.
2. Before you initial the interrupt vector of IRQ15 and enable the PIC, please enable the watchdog timer
previously, otherwise the watchdog timer will generate an interrupt at the time watchdog timer is enabled.
SW1
On
I/O Port 214h
Factory-Default Setting
Off
1
2
3
4
SW1
On
I/O Port 294h
Off
1
2
3
4
Figure 5-1 SW1: Watchdog I/O Port Address Select
5.3.2 Watchdog Timer Enabled
To enable the watchdog timer, you have to output a byte of timer factor to the watchdog register whose address is
214H or Base Port. The following is a BASICA program, which demonstrates how to enable the watchdog timer
and set the time-out period at 24 seconds.
1000
1010
1020
1030
1040
1050
REM Points to command register
WD_REG% = 214H
REM Timer factor = 84H (or 0C4H)
TIMER_FACTOR% = %H84
REM Output factor to watchdog register
OUT WD_REG%, TIMER_FACTOR%
.,etc.
5.3.3 Watchdog Timer Trigger
After you enable the watchdog timer, your program must write the same factor as enabling to the watchdog register
at least once every time-out period to its previous setting. You can change the time-out period by writing another
timer factor to the watchdog register at any time, and you must trigger the watchdog before the new time-out period
in next trigger. Below is a BASICA program, which demonstrates how to trigger the watchdog timer:
2000
2010
2020
2030
2040
2050
REM Points to command register
WD_REG% = 214H
REM Timer factor = 84H (or 0C4H)
TIMER_FACTOR% = &H84
REM Output factor to watchdog register
OUT WD_REG%, TIMER_FACTOR%
.,etc.
5.3.4 Watchdog Timer Disabled
To disable the watchdog timer, simply write a 00H to the watchdog register.
3000
3010
3020
3030
3040
3050
REM Points to command register
WD_REG% = BASE_PORT%
REM Timer factor = 0
TIMER_FACTOR% = 0
REM Output factor to watchdog register
OUT WD_REG%, TIMER_FACTOR%
., etc.
5-6
AR-B1476 User’s Guide
6. BIOS CONSOLE
This chapter describes the AR-B1476 BIOS menu displays and explains how to perform common tasks needed to
get up and running, and presents detailed explanations of the elements found in each of the BIOS menus. The
following topics are covered:
!
!
!
!
!
!
!
!
!
!
BIOS Setup Overview
Standard CMOS Setup
Advanced CMOS Setup
Advanced Chipset Setup
Peripheral Setup
Auto-Detect Hard Disks
Password Setting
Load Default Setting
BIOS Exit
BIOS Update
6.1 BIOS SETUP OVERVIEW
BIOS is a program used to initialize and set up the I/O system of the computer, which includes the ISA bus and
connected devices such as the video display, diskette drive, and the keyboard.
The BIOS provides a menu-based interface to the console subsystem. The console subsystem contains special
software, called firmware that interacts directly with the hardware components and facilitates interaction between
the system hardware and the operating system.
The BIOS Default Values ensure that the system will function at its normal capability. In the worst situation the
user may have corrupted the original settings set by the manufacturer.
After the computer turned on, the BIOS will perform a diagnostics of the system and will display the size of the
memory that is being tested. Press the [Del] key to enter the BIOS Setup program, and then the main menu will
show on the screen.
The BIOS Setup main menu includes some options. Use the [Up/Down] arrow key to highlight the option that you
wish to modify, and then press the [Enter] key to assure the option and configure the functions.
AMIBIOS HIFLEX SETUP UTILITY - VERSION 1.16
(C) 1996 American Megatrends, Inc. All Rights Reserved
Standard CMOS Setup
Advanced CMOS Setup
Advanced Chipset Setup
Peripheral Setup
Auto-Detect Hard Disks
Change User Password
Change Supervisor Password
Auto Configuration with Optimal Settings
Auto Configuration with Fail Safe Settings
Save Settings and Exit
Exit Without Saving
Standard CMOS setup for changing time, date, hard disk type, etc.
ESC:Exit ↑↓:Sel F2/F3:Color F10:Save & Exit
Figure 6-1 BIOS: Setup Main Menu
CAUTION: 1. AR-B1476 BIOS the factory-default setting is used to the <Auto Configuration with Optimal Settings>
Acrosser recommends using the BIOS default setting, unless you are very familiar with the setting
function, or you can contact the technical support engineer.
2. If the BIOS loss setting, the CMOS will detect the <Auto Configuration with Fail Safe Settings> to
boot the operation system, this option will reduce the performance of the system. Acrosser
recommends choosing the <Auto Configuration with Optimal Setting> in the main menu. The option
is best-case values that should optimize system performance.
3. The BIOS settings are described in detail in this section.
6-1
AR-B1476 User’s Guide
6.2 STANDARD CMOS SETUP
The <Standard CMOS Setup> option allows you to record some basic system hardware configuration and set the
system clock and error handling. If the CPU board is already installed in a working system, you will not need to
select this option anymore.
AMIBIOS SETUP - STANDARD CMOS SETUP
(C) 1996 American Megatrends, Inc. All Rights Reserved
Date (mm/dd/yyyy): Sat Dec 05,1998
Time (hh/mm/ss): 13:13:00
Floppy Drive A:
Floppy Drive B:
640K
39MB
Not Installed
Not Installed
Type
Pri Master : Auto
Pri Slave : Auto
LBA Blk PIO 32Bit
Size Cyln Head Wpcom Sec Mode Mode Mode Mode
Off Off Auto Off
Off Off Auto Off
Boot Sector Virus Protection
Month: Jan - Dec
Day: 01 - 31
Year: 1901 - 2099
Disabled
ESC:Exit ↑↓:Sel
PgUp/PgDn:Modify
F2/F3:Color
Figure 6-2 BIOS: Standard CMOS Setup
Date & Time Setup
Highlight the <Date> field and then press the [Page Up] /[Page Down] or [+]/[-] keys to set the current date. Follow
the month, day and year format.
Highlight the <Time> field and then press the [Page Up] /[Page Down] or [+]/[-] keys to set the current date. Follow
the hour, minute and second format.
The user can bypass the date and time prompts by creating an AUTOEXEC.BAT file. For information on how to
create this file, please refer to the MS-DOS manual.
Floppy Setup
The <Standard CMOS Setup> option records the types of floppy disk drives installed in the system.
To enter the configuration value for a particular drive, highlight its corresponding field and then select the drive type
using the left-or right-arrow key.
Hard Disk Setup
The BIOS supports various types for user settings, The BIOS supports <Pri Master> and <Pri Slave> so the user
can install up to two hard disks. For the master and slave jumpers, please refer to the hard disk’s installation
descriptions and the hard disk jumper settings.
You can select <AUTO> under the <TYPE> and <MODE> fields. This will enable auto detection of your IDE drives
during bootup. This will allow you to change your hard drives (with the power off) and then power on without
having to reconfigure your hard drive type. If you use older hard disk drives, which do not support this feature,
then you must configure the hard disk drive in the standard method as described above by the <USER> option.
Boot Sector Virus Protection
This option protects the boot sector and partition table of your hard disk against accidental modifications. Any
attempt to write to them will cause the system to halt and display a warning message. If this occurs, you can either
allow the operation to continue or use a bootable virus-free floppy disk to reboot and investigate your system. The
default setting is <Disabled>. This setting is recommended because it conflicts with new operating systems.
Installation of new operating system requires that you disable this to prevent write errors.
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AR-B1476 User’s Guide
6.3 ADVANCED CMOS SETUP
The <Advanced CMOS SETUP> option consists of configuration entries that allow you to improve your system
performance, or let you set up some system features according to your preference. Some entries here are
required by the CPU board’s design to remain in their default settings.
AMIBIOS SETUP - ADVANCED CMOS SETUP
(C) 1996 American Megatrends, Inc. All Rights Reserved
BootUp Sequence
BootUp Num-Lock
Floppy Drive Swap
Floppy Drive Seek
Mouse Support
Typematic Rate
System Keyboard
Primary Display
Password Check
Wait For ‘F1’ If Error
Hit ‘DEL’ Message Display
Internal Cache
External Cache
System BIOS Cacheable
Hard disk Delay
C000, 16k Shadow
C400, 16k Shadow
C800, 16k Shadow
CC00, 16k Shadow
D000, 16k Shadow
D400, 16k Shadow
D800, 16k Shadow
DC00, 16k Shadow
C:,A:,CDROM
On
Disabled
Disabled
Enabled
Fast
Present
VGA/EGA
Setup
Enabled
Enabled
WriteBack
WriteThru
Enabled
3 Sec
Enabled
Enabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Available Options:
C:, A:. CDROM
A:, C:, CDROM
CDROM, A:, C:
ESC:Exit ↑↓:Sel
PgUp/PgDn:Modify
F2/F3:Color
Figure 6-3 BIOS: Advanced CMOS Setup
BootUp Sequence
The option determines where the system looks first for an operating system.
BootUp Num-Lock
This item is used to activate the Num-Lock function upon system boot. If the setting is on, after a boot, the NumLock light is lit, and user can use the number key.
Floppy Drive Swap
The option reverses the drive letter assignments of your floppy disk drives in the Swap A, B setting, otherwise
leave on the default setting of Disabled (No Swap). This works separately from the BIOS Features floppy disk
swap feature. It is functionally the same as physically interchanging the connectors of the floppy disk drives. When
the setting is <Enabled>, the BIOS will be swapped floppy drive assignments so that Drive A becomes Drive B,
and Drive B becomes Drive A under DOS.
Floppy Drive Seek
If the <Floppy Drive Seek> item is setting Enabled, the BIOS will seek the floppy <A> drive one time upon boot up.
Mouse Support
The setting of Enabled allows the system to detect a PS/2 mouse on boot up. If detected, IRQ12 will be used for
the PS/2 mouse. IRQ 12 will be reserved for expansion cards if a PS/2 mouse is not detected. Disabled will
reserve IRQ12 for expansion cards and therefore the PS/2 mouse will not function.
Typematic Rate
This item specifies the speed at which a keyboard keystroke is repeated.
System Keyboard
This function specifies that a keyboard would be attached to the computer.
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AR-B1476 User’s Guide
Primary Display
The option is used to set the type of video display card installed in the system.
Password Check
This option enables password checking every time the computer is powered on or every time the BIOS Setup is
executed. If Always is chosen, a user password prompt appears every time the computer is turned on. If Setup is
chosen, the password prompt appears if the BIOS executed.
Wait for ‘F1’ If Error
AMIBIOS POST error messages are followed by:
Press <F1> to continue
If this option is set to Disabled, the AMIBIOS does not wait for you to press the <F1> key after an error message.
Hit ‘DEL’ Message Display
Set this option to Disabled to prevent the message as follows:
Hit ‘DEL’ if you want to run setup
It will prevent the message from appearing on the first BIOS screen when the computer boots.
Internal Cache
This option specifies the caching algorithm used for L1 internal cache memory. The settings are:
Setting
Description
Disabled Neither L1 internal cache memory on the CPU or L2
secondary cache memory is enabled.
WriteBack Use the write-back caching algorithm.
WriteThru Use the write-through caching algorithm.
Table 6-1 Internal Cache Setting
External Cache
This option specifies the caching algorithm used for L2 secondary (external) cache memory. The settings are:
Setting
Disabled
Description
Neither L1 internal cache memory on the CPU or L2
secondary cache memory is enabled.
WriteBack Use the write-back caching algorithm.
WriteThru Use the write-through caching algorithm.
Table 6-2 External Cache Setting
System BIOS Cacheable
When this option is set to Enabled, the contents of the F0000h system memory segment can be read from or
written to L2 secondary cache memory. The contents of the F0000h memory segment are always copied from the
BIOS ROM to system RAM for faster execution.
The settings are Enabled or Disabled. The Optimal default setting is Enabled. The Fail-Safe default setting is
Disabled.
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AR-B1476 User’s Guide
Shadow
These options control the location of the contents of the 32KB of ROM beginning at the specified memory location.
If no adapter ROM is using the named ROM area, this area is made available to the local bus. The settings are:
SETTING
DESCRIPTION
Disabled The video ROM is not copied to RAM. The contents of
the video ROM cannot be read from or written to cache
memory.
Enabled The contents of C000h - C7FFFh are written to the same
address in system memory (RAM) for faster execution.
Cached The contents of the named ROM area are written to the
same address in system memory (RAM) for faster
execution, if an adapter ROM will be using the named
ROM area. Also, the contents of the RAM area can be
read from and written to cache memory.
Table 6-3 Shadow Setting
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AR-B1476 User’s Guide
6.4 ADVANCED CHIPSET SETUP
This option controls the configuration of the board’s chipset. Control keys for this screen are the same as for the
previous screen.
AMIBIOS SETUP - ADVANCED CHIPSET SETUP
(C) 1996 American Megatrends, Inc. All Rights Reserved
Auto Config Function
AT Bus Clock
DRAM Read Timing
DRAM Write Timing
Memory Parity Check
DRAM Hidden Refresh
DRAM Refresh Period Setting
Memory Hole At 15-16M
ISA I/O Recovery
ISA I/O Recovery time
Enabled
CLK/4
Normal
Normal
Disabled
Enabled
60us
Disabled
Disabled
1.5us
Available Options :
Disabled
Enabled
ESC:Exit ↑↓:Sel
PgUp/PgDn:Modify
F2/F3:Color
Figure 6-4 BIOS: Advanced Chipset Setup
Automatic Configuration
If selecting a certain setting for one BIOS Setup option determines the settings for one or more other BIOS Setup
options, the BIOS automatically assigns the dependent settings and does not permit the end user to modify these
settings unless the setting for the parent option is changed. Invalid options are grayed and cannot be selected.
AT Bus Clock
This option sets the polling clock speed of ISA Bus (PC/104).
NOTE: 1. PCLK means the CPU inputs clock.
2. Acrosser recommends user setting at the range of 8MHz to 10MHz.
Memory Parity Check
This option Enables or Disables parity is error checking for all system RAM. This option must be Disabled if the
used DRAM SIMMs are 32-bit but not 36-bit devices.
Memory Hole at 15-16 M
This option specifies the range 15MB to 16MB in memory that cannot be addressed on the ISA bus.
ISA I/O Recovery
ISA I/O Recovery Time
These options specify the length of the delay (in BUSCLK) inserted between consecutive 8-bit/16-bit I/O operations.
6-6
AR-B1476 User’s Guide
6.5 PERIPHERAL SETUP
This section is used to configure peripheral features.
AMIBIOS SETUP - PERIPHERAL SETUP
(C) 1996 American Megatrends, Inc. All Rights Reserved
OnBoard FDC
OnBoard Serial Port1
OnBoard Serial Port1 IRQ
OnBoard Serial Port2
OnBoard Serial Port2 IRQ
OnBoard Parallel Port
Parallel Port Mode
EPP Version
Parallel Port IRQ
Parallel Port DMA Channel
OnBoard PCI IDE
Enabled
3F8
4
2F8
3
378
Normal
N/A
7
N/A
Both
Available Options :
Auto
Disabled
Enabled
ESC:Exit ↑↓:Sel
PgUp/PgDn:Modify
F2/F3:Color
Figure 6-5 BIOS: Peripheral Setup
OnBoard FDC
This option enables the floppy drive controller on the AR-B1476.
OnBoard Serial Port
This option enables the serial port on the AR-B1476.
OnBoard Parallel Port
This option enables the parallel port on the AR-B1476.
Parallel Port Mode
This option specifies the parallel port mode. ECP and EPP are both bi-directional data transfer schemes that
adhere to the IEEE P1284 specifications.
Parallel Port DMA Channel
This option is only available if the setting for the parallel Port Mode option is ECP.
OnBoard PCI IDE/IDE Prefetch
This option specifies the onboard IDE controller channels that will be used.
6.6 AUTO-DETECT HARD DISKS
This option detects the parameters of an IDE hard disk drive, and automatically enters them into the Standard
CMOS Setup screen.
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AR-B1476 User’s Guide
6.7 PASSWORD SETTING
This BIOS Setup has an optional password feature. The system can be configured so that all users must enter a
password every time the system boots or when BIOS Setup is executed. User can set either a Supervisor
password or a User password.
6.7.1 Setting Password
Select the appropriate password icon (Supervisor or User) from the Security section of the BIOS Setup main menu.
Enter the password and press [Enter]. The screen does not display the characters entered. After the new
password is entered, retype the new password as prompted and press [Enter].
If the password confirmation is incorrect, an error message appears. If the new password is entered without error,
press [Esc] to return to the BIOS Main Menu. The password is stored in CMOS RAM after BIOS completes. The
next time the system boots, you are prompted for the password function is present and is enabled.
Enter new supervisor password:
6.7.2 Password Checking
The password check option is enabled in Advanced Setup by choosing either Always (the password prompt
appears every time the system is powered on) or Setup (the password prompt appears only when BIOS is run).
The password is stored in CMOS RAM. User can enter a password by typing on the keyboard. As user select
Supervisor or User. The BIOS prompts for a password, user must set the Supervisor password before user can
set the User password. Enter 1-6 character as password. The password does not appear on the screen when
typed. Make sure you write it down.
6.8 LOAD DEFAULT SETTING
In this section permit user to select a group of setting for all BIOS Setup options. Not only can you use these items
to quickly set system configuration parameters, you can choose a group of settings that have a better chance of
working when the system is having configuration related problems.
6.8.1 Auto Configuration with Optimal Setting
User can load the optimal default settings for the BIOS. The Optimal default settings are best-case values that
should optimize system performance. If CMOS RAM is corrupted, the optimal settings are loaded automatically.
Load high performance settings (Y/N) ?
6.8.2 Auto Configuration with Fail Safe Setting
User can load the Fail-Safe BIOS Setup option settings by selecting the Fail-Safe item from the Default section of
the BIOS Setup main menu.
The Fail-Safe settings provide far from optimal system performance, but are the most stable settings. Use this
option as a diagnostic aid if the system is behaving erratically.
Load failsafe settings (Y/N) ?
6-8
AR-B1476 User’s Guide
6.9 BIOS EXIT
This section is used to exit the BIOS main menu in two types situation. After making your changes, you can either
save them or exit the BIOS menu and without saving the new values.
6.9.1 Save Settings and Exit
This item set in the <Standard CMOS Setup>, <Advanced CMOS Setup>, <Advanced Chipset Setup> and the new
password (if it has been changed) will be stored in the CMOS. The CMOS checksum is calculated and written into
the CMOS.
As you select this function, the following message will appear at the center of the screen to assist you to save data
to CMOS and Exit the Setup.
Save current settings and exit (Y/N) ?
6.9.2 Exit Without Saving
When you select this option, the following message will appear at the center of the screen to help to Abandon all
Data and Exit Setup.
Quit without saving (Y/N) ?
6.10 BIOS UPDATE
The BIOS program instructions are contained within computer chips called FLASH ROMs that are located on your
system board. The chips can be electronically reprogrammed, allowing you to upgrade your BIOS firmware
without removing and installing chips.
The AR-B1476 provides FLASH BIOS update function for you to easily upgrade newer BIOS version. Please
follow the operating steps for updating new BIOS:
Step 1:
Turn on your system and don’t detect the CONFIG.SYS and AUTOEXEC.BAT files. Keep your
system in the real mode.
Step 2:
Insert the FLASH BIOS diskette into the floppy disk drive.
Step 3:
In the MS-DOS mode, you can type the AMIFLASH program.
A:\>AMIFLASH
Step 4:
The screen will show the message as follow:
Enter the BIOS File name from which Flash EPROM will be programmed. The File name must and
with a <ENTER> or press <ESC> to exit.
Step 5:
And then please enter the file name to the box of <Enter File Name>. And the box of <Message>
will show the notice as follow. In the bottom of this window always show the gray statement.
Flash EPROM Programming is going to start. System will not be usable until Programming of Flash
EPROM is successfully complete. In case of any error, existing Flash EPROM must be replaced by
new program Flash EPROM.
Step 6:
As the gray statement, press the <Y> key to updating the new BIOS.
And then the <Message> box will show the <Programming Flash EPROM>, and the gray statement
shows <Please Wait>.
Step 7:
The BIOS update is successful, the message will show <Flash Update Completed - Pass>.
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AR-B1476 User’s Guide
NOTE: 1. After turn on the computer and the system didn’t detect the boot procedure, please press the [F5] key
immediately. The system will pass the CONFIG.SYS and AUTOEXEC.BAT files.
2. The BIOS Flash disk is not the standard accessory. Now the onboard BIOS is the newest BIOS, if user
needs adding some functions in the future please contact technical supporting engineers, they will
provide the newest BIOS for updating.
3. The file of AMIFLASH.EXE doesn’t attach in the utility diskette. If user needs to update the BIOS version
for some reasons please contact the technical supporting engineers, and notices the file of
AMIFLASH.EXE has to use the Version 6.31.
6-10
AR-B1476 User’s Guide
7. SPECIFICATIONS
CPU:
Supports25 to 133 Mhz Intel / AMD / Cyrix / ST / IBM 486 CPU .
Chipset:
ALI M1489/M1487 and C & T 65545
Bus Interface:
ISA (PC/AT) and non-stack through PC/104 bus
RAM Memory:
Supports FPM/EDO RAM, 72 MB maximum (8MB on-board and one 72-pin SIMMs w/o DRAM)
Cache Size:
512KB for standard
VGA/LCD Display: 1 MB VRAM (PCI bus, 1024X768/256 colors)
HDC:
One PCI IDE Supports LBA/Block mode access
FDC:
Supports two 5.25” or 3.5” floppy disk drives
Parallel Port:
Serial Port:
1 bi-directional centronics type parallel port
Supports SPP/EPP/ECP mode
1 RS-232C and 1 RS-232C/RS-485
Keyboard:
PC/AT compatible keyboard
Watchdog:
Programmable watchdog timer 3 to 42 seconds time interval
Speaker:
On-board Buzzer and external speaker
Real Time Clock:
BQ3287MT or compatible chips with 128 bytes data RAM
BIOS:
AMI Flash BIOS (128KB, including VGA BIOS)
Flash Disk:
Supports 1 DiskOnChip socket
BUS Drive Cap.:
15 TTL level loads maximum
CE Design-In:
Add EMI components to COM ports, parallel port, CRT, keyboard, and PS/2 mouse
Indicator:
Power LED, and watchdog LED
Power Req.:
+5V only, 2.0A maximum (base on Intel DX4-100)
PC Board:
8 layers, EMI considered
Dimensions:
185 mmX122mm (7.29”X4.80”)
7-1
AR-B1476 User’s Guide
8. PLACEMENT & DIMENSIONS
8.1 PLACEMENT
CN1
LED1
CN2
CN4
CN5
J6
JP1
P1
P2
J1
JP4
SW1
CN3
LED2
105
105
JP3
104
J2
J3
JP2
J4
J5
J11
U4
U3
U2
CN6
J7
104
JP5
1
J10
DB1
1
JP6
JP7
J8
M12
M13
M3
M11
M4
M5
M6
M2
M1
M7
M10
U7
U8
JP8 JP9
U9
U10
U11
U16 [DOC]
U12
U18
DB2
J9
CN7
SIMM1
BUS1
CN8
BUS2
CN9
8-1
1
AR-B1476 User’s Guide
8.2 DIMENSIONS
2900
1100
185
125
130
825
825
150
445
455
984
2145
3950
4800
984
460
7−∅138
3180
3130
95
210
95
210
1700
400
210
185
3000
7280
Unit: mil (1 inch = 25.4 mm = 1000 mil)
8-2
600
805
3150
345
25
300
800
600
450
930
95
369
905
940
AR-B1476 User’s Guide
9. PROGRAMMING RS-485 & INDEX
9.1 PROGRAMMING RS-485
The majority communicative operation of the RS-485 is in the same of the RS-232. When the RS-485 proceeds
the transmission which needs control the TXC signal, and the installing steps are as follows:
Step 1:
Enable TXC
Step 2:
Send out data
Step 3:
Waiting for data empty
Step 4:
Disable TXC
NOTE: Please refer to the section of the “Serial Port” in the chapter “System Control” for the detail description of
the COM port’s register.
(1) Initialize COM port
Step 1:
Initialize COM port in the receiver interrupt mode, and /or transmitter interrupt mode. (All of the
communication protocol buses of the RS-485 are in the same.)
Step 2:
Disable TXC (transmitter control), the bit 0 of the address of offset+4 just sets “0”.
NOTE:
Control the AR-B1476 CPU card’s DTR signal to the RS-485’s TXC communication.
(2) Send out one character (Transmit)
Step 1:
Enable TXC signal, and the bit 0 of the address of offset+4 just sets “1”.
Step 2:
Send out the data. (Write this character to the offset+0 of the current COM port address)
Step 3:
Wait for the buffer’s data empty. Check transmitter holding register (THRE, bit 5 of the address of
offset+5), and transmitter shift register (TSRE, bit 6 of the address of offset+5) are all sets must be
“0”.
Step 4:
Disabled TXC signal, and the bit 0 of the address of offset+4 sets “0”
(3) Send out one block data (Transmit – the data more than two characters)
Step 1:
Enable TXC signal, and the bit 0 of the address of offset+4 just sets “1”.
Step 2:
Send out the data. (Write all data to the offset+0 of the current COM port address)
Step 3:
Wait for the buffer’s data empty. Check transmitter holding register (THRE, bit 5 of the address of
offset+5), and transmitter shift register (TSRE, bit 6 of the address of offset+5) are all sets must be
“0”.
Step 4:
Disabled TXC signal, and the bit 0 of the address of offset+4 sets “0”
(4) Receive data
The RS-485’s operation of receiving data is in the same of the RS-232’s.
9-1
AR-B1476 User’s Guide
(5) Basic Language Example
a.) Initial 86C450 UART
10
20
30
40
OPEN “COM1:9600,m,8,1”AS #1 LEN=1
REM Reset DTR
OUT &H3FC, (INP(%H3FC) AND &HFA)
RETURN
b.) Send out one character to COM1
10
20
30
40
50
60
70
80
90
REM Enable transmitter by setting DTR ON
OUT &H3FC, (INP(&H3FC) OR &H01)
REM Send out one character
PRINT #1, OUTCHR$
REM Check transmitter holding register and shift register
IF ((INP(&H3FD) AND &H60) >0) THEN 60
REM Disable transmitter by resetting DTR
OUT &H3FC, (INP(&H3FC) AND &HEF)
RETURN
c.) Receive one character from COM1
10
20
30
40
50
60
70
80
9-2
REM Check COM1: receiver buffer
IF LOF(1)<256 THEN 70
REM Receiver buffer is empty
INPSTR$”
RETURN
REM Read one character from COM1: buffer
INPSTR$=INPUT$(1,#1)
RETURN
AR-B1476 User’s Guide
9.2 INDEX
Name
CN1
CN2
CN3
CN4
CN5
CN6
CN7
CN8
CN9
DB1
DB2
SIMM1
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
J11
LED1
LED2
P1 & P2
JP1
JP2
JP3
JP4
JP5
JP6
JP7
JP8
JP9
CP1
SW1
Function
Hard disk (IDE) connector
FDD port connector
LCD panel display connector
Parallel port connector
RS-232 connector COM-B
PS/2 mouse connector
64 pin PC/104 connector bus A & B
40 pin PC/104 connector bus C & D
Keyboard connector
CRT connector
RS-232 connector COM-A
Socket for DRAM SIMMs
Watchdog LED header
External speaker header
HDD LED header
RS-485 connector
LCD control connector
External power LED & keyboard lock header
External PS/2 mouse connector
Reset header
AUX. Keyboard connector
Power connector
Touch Screen Connector
Watchdog LED
Power LED
CPU logic core voltage select
Write-through/Write-back CPU select
COM-B RS-485 terminator select
DE/E signal from M or LP select
COM-B RS-485 adapter select
AMD 3X/4X CPU select
CPU clock multiplier select
PCI clock select
PS/2 mouse IRQ12 setting
COM-A RS-485 adapter select
Cache Size Select
COM-B RS232/RS-485 Select
DiskOnChip Memory Address Setting
Watchdog I/O Port Address Select
Page
3-2
3-3
4-3
3-3
3-8
3-10
3-4
3-4
3-9
4-1
3-8
3-12
3-6
3-9
3-6
3-8
4-2
3-6
3-10
3-10
3-9
3-9
4-2
3-11
3-12
3-7
4-2
3-7
3-11
3-11
3-11
3-10
3-7
3-12
3-7
3-13
5-6
Note:
If the content in Setting is inconsistent with CD-ROM. Please refer to the Setting as priority.
9-3